Google's Home Grown Earth Day Logo

As expected, most of the search engines have special logos for the day. Google and Yahoo's logos are animated, Google has a JPG that rotates between images (like an animated GIF but not) to show the evolution of the growth. Yahoo has a nice animated logo, Bing and Ask.com have really nice background themes and even Sogou has a special logo.

Google's logo in stages (warning, a lot of scrolling needed) but before, here is a video of it in action:

This logo was actual photos shot by a Google Doodler over time. Google's Marissa Mayer explained on Twitter: